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LTABL

更新时间： 2024-11-27 03:52:11

品牌	Logo	应用领域
凌特 - Linear		控制器
页数	文件大小	规格书
32页	273K
描述
Negative Low Voltage Hot Swap Controllers

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中文翻译

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数据手册

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LTABL 数据手册

LTC4214-1/LTC4214-2

Negative Low Voltage

Hot Swap Controllers

DESCRIPTIO

FEATURES

The LTC^®4214 negative voltage Hot Swap^TMcontroller

allows a board to be safely inserted and removed from a

livebackplane.Outputcurrentiscontrolledbythreestages

of current limiting: a timed circuit breaker, active current

limiting and a fast feedforward path that limits peak

current under worst-case catastrophic fault conditions.

■

Allows Safe Board Insertion and Removal from a

Live Backplane

■

Controls Supplies from 0V to –16V

■

Adjustable Analog Current Limit With Circuit

Breaker Timer

■

Fast Response Time Limits Peak Fault Current

■

Adjustable Soft-Start Current Limit

Adjustable undervoltage and overvoltage detectors dis-

connect the load whenever the input supply exceeds the

desired operating range. The LTC4214 controls negative

supplies ranging from near zero to –16V. A multifunction

timerdelaysinitialstart-upandcontrolsthecircuitbreaker’s

response time. This response time is accelerated by

sensing excessive MOSFET drain voltage, keeping the

MOSFET within its safe operating area (SOA). An adjust-

able soft-start circuit controls MOSFET inrush current at

start-up. A power good status output can enable a power

module at start-up or disable it if the circuit breaker trips.

■

Adjustable Timer with Drain Voltage Accelerated

Response

■

Adjustable Undervoltage/Overvoltage Protection

■

LTC4214-1: Latch Off After Fault

■

LTC4214-2: Automatic Retry After Fault

■

Available in the 10-Pin MSOP Package

APPLICATIO S

■

Hot Board Insertion

■

Electronic Circuit Breaker

The LTC4214-1 latches off after a circuit breaker fault times

out. The LTC4214-2 provides automatic retry after a fault.

The LTC4214 is available in the 10-pin MSOP package.

■

Negative Power Supply Control

■

Central Office Switching

■

High Availability Servers

, LTC and LT are registered trademarks of Linear Technology Corporation.

Hot Swap is a trademark of Linear Technology Corporation.

■

Disk Arrays

■

Optical Networking/Switching

■

ECL

TYPICAL APPLICATIO

–5.2V/5A ECL Supply Hot Swap Controller

Start-Up Behavior

3.3V

BSS138

GND

GATE

10Ω

470Ω

5V/DIV

LOAD

SMAJ7A

100µF

100nF

–5.2V

ECL

GND

SENSE

20mV/DIV

LTC4214-1

PWRGD

0.1µF

22Ω

(SHORT PIN)

34k

75k

9, 8

UV/OV

TIMER

DRAIN

GATE

OUT

32.4k

5V/DIV

IRF7413

5.6nF

SENSE

10Ω

10nF

0.01Ω

PWRGD

5V/DIV

PUSH

RESET

1nF

3.3nF

4214 TA02

4214 TA01

–5.2V

421412f

12 3 4 5 6 7...32

中文翻译

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